Page 502 of 618 FirstFirst ... 2402452492500501502503504512552602 ... LastLast
Results 5,011 to 5,020 of 6180

Thread: Use of X-ray film: technical discussion with example images

  1. #5011

    Join Date
    Oct 2015
    Location
    Nicosia, Cyprus
    Posts
    90

    Re: Use of X-ray film: technical discussion with example images

    Scan from a contact print on Ilford MG warmtone paper at grade 1.

    More often than not, I make two identical exposures of any scene I deem worthy, so that I get a second chance if processing goes wrong on the first negative.

    In this case, the first one came out ok (way back when), so the duplicate was kept aside to be used for testing.

    The negative that made this print was developed last week, more than two years after exposure, which speaks volumes for the stability of the latent image on exposed xray films (or at the very least on this particular film, Agfa CPG+).

    18x24cm negative (double sided, green sensitive), developed in Ilford MG paper developer (1+50) in a Jobo 2830 drum for 8'min.


  2. #5012

    Join Date
    Jun 2010
    Posts
    229

    Re: Use of X-ray film: technical discussion with example images

    I had a similar experience with Kodak High Speed Green X-ray film. In 2012 I made four exposures of a scene and developed three of them over the next few days. The fourth sheet stayed in my paper safe for two years before being processed in 2014. The image looked identical the best of the three processed two years earlier. This is significant, because X-ray film is almost always processed immediately after exposure in a professional setting, so the manufacturers don't have any reason to strive for long term latent image quality. I'm guessing latent image preservation goes along with other desirable characteristics that good X-ray film needs to have.

  3. #5013

    Join Date
    Jul 2013
    Location
    Queensland, Australia
    Posts
    474

    Re: Use of X-ray film: technical discussion with example images

    Thodoris, thankyou for sharing your experiences with your tubes, much the same experiences I had with tubes, but you had much better results. Speaking of the electric rollers, I had one, using a mod54 in a Paterson dev tank (3 spool version). The only problem with the electric roller I found was that as the developer is only turning one way I was still getting uneven development, so I got out my spare electric roller to use in the opposite direction. I changed rollers every minute or so and got really good results

  4. #5014

    Join Date
    Oct 2015
    Location
    Nicosia, Cyprus
    Posts
    90

    Re: Use of X-ray film: technical discussion with example images

    Well, sharing our experiences and inspiring each other is what it's all about, right?

    Here is a scan from a contact print on Hahnemühle Platinum Rag coated with Mike Ware's Cyanotype formula.

    Using the same in-camera negative from which I printed the silver gelatin contact print in my previous post.


  5. #5015
    Tin Can's Avatar
    Join Date
    Dec 2011
    Posts
    19,154

    Re: Use of X-ray film: technical discussion with example images

    Thanks for posting both prints.

    I am wavering on Cyanotype

    Which do you prefer?

  6. #5016

    Join Date
    Oct 2015
    Location
    Nicosia, Cyprus
    Posts
    90

    Re: Use of X-ray film: technical discussion with example images

    Randy,

    Even though I do like how the cyanotype turned out (also did a darker version, but I like this one better), I'm not the biggest fan of this process in general.

    Despite all my experience in silver printing, my only previous experience in "alternative processes" are a handful of prints I did some 20 years ago in a workshop. Still a total newbie, taking my first steps in climbing the proverbial learning curve.

    (Having a working knowledge of sensitometry helps immensely though.)

    So, before trying out something more challenging, like palladium or carbon transfer, I thought it would be best to try a simpler (and cheaper) process first.

  7. #5017

    Join Date
    Feb 2007
    Location
    Paris EU
    Posts
    1,043

    Re: Use of X-ray film: technical discussion with example images

    30x40cm negative (double sided, green sensitive), hand development on plastic trays.
    D76
    1/1
    8 min, 20°C
    continus agitation
    film rated 9 ASA
    Base rabbit cages trays are useful, cheap and available in large format dimension.
    Attached Thumbnails Attached Thumbnails Violoncello.jpg  

  8. #5018

    Join Date
    Oct 2008
    Location
    Summerville, SC
    Posts
    1,816

    Re: Use of X-ray film: technical discussion with example images

    Quote Originally Posted by Miguel Coquis View Post
    30x40cm negative (double sided, green sensitive), hand development on plastic trays.
    D76
    1/1
    8 min, 20°C
    continus agitation
    film rated 9 ASA
    Base rabbit cages trays are useful, cheap and available in large format dimension.
    Nice!

  9. #5019
    Tin Can's Avatar
    Join Date
    Dec 2011
    Posts
    19,154

    Re: Use of X-ray film: technical discussion with example images

    Quote Originally Posted by Thodoris Tzalavras View Post
    Randy,

    Even though I do like how the cyanotype turned out (also did a darker version, but I like this one better), I'm not the biggest fan of this process in general.

    Despite all my experience in silver printing, my only previous experience in "alternative processes" are a handful of prints I did some 20 years ago in a workshop. Still a total newbie, taking my first steps in climbing the proverbial learning curve.

    (Having a working knowledge of sensitometry helps immensely though.)

    So, before trying out something more challenging, like palladium or carbon transfer, I thought it would be best to try a simpler (and cheaper) process first.
    Very good idea that I should follow!

  10. #5020
    Corran's Avatar
    Join Date
    Apr 2011
    Location
    North GA Mountains
    Posts
    8,514

    Re: Use of X-ray film: technical discussion with example images

    Maybe try Van Dyke! I made some from x-ray film years ago. I personally am not a fan of the color of cyanotypes generally. I've seen some toned cyanotypes that were okay though, but never experimented with that myself.
    Bryan | Blog | YouTube | Instagram | Portfolio
    All comments and thoughtful critique welcome

Similar Threads

  1. Technical Pan Film
    By Jehu in forum Darkroom: Film, Processing & Printing
    Replies: 34
    Last Post: 22-Apr-2016, 18:42
  2. Images, not technical discussions.
    By rdenney in forum Image Sharing (Everything Else) & Discussion
    Replies: 0
    Last Post: 23-Jul-2015, 14:16
  3. Replies: 91
    Last Post: 23-Jul-2015, 12:01
  4. T Max 400 Technical Discussion by Sandy King
    By Michael Kadillak in forum Darkroom: Film, Processing & Printing
    Replies: 38
    Last Post: 7-Feb-2006, 06:08
  5. Discussion: Pyro stain, silver rich film & thick emulsion
    By Pete Caluori in forum Darkroom: Film, Processing & Printing
    Replies: 10
    Last Post: 22-Nov-2003, 04:39

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •